Every human spent about half an hour as a single cell.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The world's shortest man measures only 21.5 inches.
73
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69